gem5 v24.1.0.1
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This version of set associative indexing deals with a Lookup structure made of address and secure bit. More...
#include <tagged_entry.hh>
Public Member Functions | |
PARAMS (TaggedSetAssociative) | |
TaggedSetAssociative (const Params &p) | |
std::vector< ReplaceableEntry * > | getPossibleEntries (const KeyType &key) const override |
Find all possible entries for insertion and replacement of an address. | |
Addr | regenerateAddr (const KeyType &key, const ReplaceableEntry *entry) const override |
Regenerate an entry's address from its tag and assigned indexing bits. | |
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IndexingPolicyTemplate (const Params &p, uint32_t num_entries, int set_shift) | |
Construct and initialize this policy. | |
~IndexingPolicyTemplate () | |
Destructor. | |
void | setEntry (ReplaceableEntry *entry, const uint64_t index) |
Associate a pointer to an entry to its physical counterpart. | |
ReplaceableEntry * | getEntry (const uint32_t set, const uint32_t way) const |
Get an entry based on its set and way. | |
virtual Addr | extractTag (const Addr addr) const |
Generate the tag from the given address. | |
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const Params & | params () const |
SimObject (const Params &p) | |
virtual | ~SimObject () |
virtual void | init () |
init() is called after all C++ SimObjects have been created and all ports are connected. | |
virtual void | loadState (CheckpointIn &cp) |
loadState() is called on each SimObject when restoring from a checkpoint. | |
virtual void | initState () |
initState() is called on each SimObject when not restoring from a checkpoint. | |
virtual void | regProbePoints () |
Register probe points for this object. | |
virtual void | regProbeListeners () |
Register probe listeners for this object. | |
ProbeManager * | getProbeManager () |
Get the probe manager for this object. | |
virtual Port & | getPort (const std::string &if_name, PortID idx=InvalidPortID) |
Get a port with a given name and index. | |
virtual void | startup () |
startup() is the final initialization call before simulation. | |
DrainState | drain () override |
Provide a default implementation of the drain interface for objects that don't need draining. | |
virtual void | memWriteback () |
Write back dirty buffers to memory using functional writes. | |
virtual void | memInvalidate () |
Invalidate the contents of memory buffers. | |
void | serialize (CheckpointOut &cp) const override |
Serialize an object. | |
void | unserialize (CheckpointIn &cp) override |
Unserialize an object. | |
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EventQueue * | eventQueue () const |
void | schedule (Event &event, Tick when) |
void | deschedule (Event &event) |
void | reschedule (Event &event, Tick when, bool always=false) |
void | schedule (Event *event, Tick when) |
void | deschedule (Event *event) |
void | reschedule (Event *event, Tick when, bool always=false) |
void | wakeupEventQueue (Tick when=(Tick) -1) |
This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers. | |
void | setCurTick (Tick newVal) |
EventManager (EventManager &em) | |
Event manger manages events in the event queue. | |
EventManager (EventManager *em) | |
EventManager (EventQueue *eq) | |
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Serializable () | |
virtual | ~Serializable () |
void | serializeSection (CheckpointOut &cp, const char *name) const |
Serialize an object into a new section. | |
void | serializeSection (CheckpointOut &cp, const std::string &name) const |
void | unserializeSection (CheckpointIn &cp, const char *name) |
Unserialize an a child object. | |
void | unserializeSection (CheckpointIn &cp, const std::string &name) |
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DrainState | drainState () const |
Return the current drain state of an object. | |
virtual void | notifyFork () |
Notify a child process of a fork. | |
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Group (Group *parent, const char *name=nullptr) | |
Construct a new statistics group. | |
virtual | ~Group () |
virtual void | regStats () |
Callback to set stat parameters. | |
virtual void | resetStats () |
Callback to reset stats. | |
virtual void | preDumpStats () |
Callback before stats are dumped. | |
void | addStat (statistics::Info *info) |
Register a stat with this group. | |
const std::map< std::string, Group * > & | getStatGroups () const |
Get all child groups associated with this object. | |
const std::vector< Info * > & | getStats () const |
Get all stats associated with this object. | |
void | addStatGroup (const char *name, Group *block) |
Add a stat block as a child of this block. | |
const Info * | resolveStat (std::string name) const |
Resolve a stat by its name within this group. | |
void | mergeStatGroup (Group *block) |
Merge the contents (stats & children) of a block to this block. | |
Group (const Group &)=delete | |
Group & | operator= (const Group &)=delete |
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Named (const std::string &name_) | |
virtual | ~Named ()=default |
virtual std::string | name () const |
Protected Member Functions | |
virtual uint32_t | extractSet (const KeyType &key) const |
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Drainable () | |
virtual | ~Drainable () |
virtual void | drainResume () |
Resume execution after a successful drain. | |
void | signalDrainDone () const |
Signal that an object is drained. | |
Additional Inherited Members | |
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typedef SimObjectParams | Params |
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static void | serializeAll (const std::string &cpt_dir) |
Create a checkpoint by serializing all SimObjects in the system. | |
static SimObject * | find (const char *name) |
Find the SimObject with the given name and return a pointer to it. | |
static void | setSimObjectResolver (SimObjectResolver *resolver) |
There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. | |
static SimObjectResolver * | getSimObjectResolver () |
There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. | |
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static const std::string & | currentSection () |
Gets the fully-qualified name of the active section. | |
static void | generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream) |
Generate a checkpoint file so that the serialization can be routed to it. | |
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using | KeyType = typename Types::KeyType |
using | Params = typename Types::Params |
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const unsigned | assoc |
The associativity. | |
const uint32_t | numSets |
The number of sets in the cache. | |
const int | setShift |
The amount to shift the address to get the set. | |
const unsigned | setMask |
Mask out all bits that aren't part of the set index. | |
std::vector< std::vector< ReplaceableEntry * > > | sets |
The cache sets. | |
const int | tagShift |
The amount to shift the address to get the tag. | |
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const SimObjectParams & | _params |
Cached copy of the object parameters. | |
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EventQueue * | eventq |
A pointer to this object's event queue. | |
This version of set associative indexing deals with a Lookup structure made of address and secure bit.
It extracts the address but discards the secure bit which is used for tagging only
Definition at line 76 of file tagged_entry.hh.
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inline |
Definition at line 87 of file tagged_entry.hh.
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inlineprotectedvirtual |
Reimplemented in gem5::prefetch::StridePrefetcherHashedSetAssociative.
Definition at line 80 of file tagged_entry.hh.
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inlineoverridevirtual |
Find all possible entries for insertion and replacement of an address.
Should be called immediately before ReplacementPolicy's findVictim() not to break cache resizing.
addr | The addr to a find possible entries for. |
Implements gem5::IndexingPolicyTemplate< Types >.
Definition at line 92 of file tagged_entry.hh.
gem5::TaggedSetAssociative::PARAMS | ( | TaggedSetAssociative | ) |
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inlineoverridevirtual |
Regenerate an entry's address from its tag and assigned indexing bits.
tag | The tag bits. |
entry | The entry. |
Implements gem5::IndexingPolicyTemplate< Types >.
Definition at line 98 of file tagged_entry.hh.
References gem5::ReplaceableEntry::getSet().